Logic

Discussion in 'General Discussion' started by CrimsonWhite, Aug 30, 2006.

  1. CrimsonWhite
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    CrimsonWhite *****istrator Emeritus Supporting Member

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    You need precisely 4 gallons of water. The only instruments of measurement that you have ar a 5 gallon jug and a 3 gallon jug. Using these jugs, how would you measure precisely 4 gallons?

    Kudos to the first that can solve it.
     
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  2. Nienna
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    Nienna Senior Member

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    Fill the 5 gallon jug. Pour water from the 5 gallon jug into the 3 gallon jug to fill the 3 gal jug. Remove half of the water left in the 5 gallon jug. Add the 3 gallons back into the 5 gal jug. But that isn't PRECISE, bc how would you know that you have removed precisely half?

    Hmmmm... :confused:
     
  3. Nienna
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    Nienna Senior Member

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    Ah ha!

    Fill the five gallon jug. Pour the water into the 3 gal jug to fill it. There will be 2 gallons left in the 5 gal. jug. Reserve this water in a separate container. Repeat. Add the 2 gallons reserved to the 2 gallons left in the 5 gal. container. 4 gallons! Voila!

    :D

    You said the only instruments of MEASURE were the jugs, but we could have a separate holding container? Yes?
     
  4. CrimsonWhite
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    CrimsonWhite *****istrator Emeritus Supporting Member

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    You are on the right track.
     
  5. The ClayTaurus
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    The ClayTaurus Senior Member

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    Fill the 5 gallon Jug. Empty it into the 3 gallon jug without spilling a drop (leaving 2 gallons in the 5 gallon jug)

    Empty the 3 gallon jug

    Fill the 3 gallon jug with the 2 gallons from the 5 gallon jug. (now the 5 gallon jug is empty and the 3 gallon jug has 2 gallons in it)

    Refill the 5 gallon jug

    Pour water into the 3 gallon jug until full (2 gallons already in it plus one more from the 5 gallon jug)

    5 gallons less the 1 gallon poured into the 3 gallon jug gives you 4 gallons of water in the 5 gallon jug.
     
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  6. CrimsonWhite
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    CrimsonWhite *****istrator Emeritus Supporting Member

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    You are not allowed to use a seperate container. The 5 gallon and 3 gallon jug only.
     
  7. CrimsonWhite
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    CrimsonWhite *****istrator Emeritus Supporting Member

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    DING DING DING

    Nice job.
    :clap1:
     
  8. The ClayTaurus
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    The ClayTaurus Senior Member

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    *victory dance*

    :dance::mm: :dance::mm: :dance::mm: :dance::mm: :dance:
     
  9. Nienna
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    Nienna Senior Member

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    Great work Clay! :clap:
     
  10. dmp
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    dmp Senior Member

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    You suck, 2nd Grade sucks, and School sucks and I'm never coming back again!
     
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